3948391319 has 2 divisors, whose sum is σ = 3948391320. Its totient is φ = 3948391318.

The previous prime is 3948391303. The next prime is 3948391331. The reversal of 3948391319 is 9131938493.

It is a strong prime.

It is an emirp because it is prime and its reverse (9131938493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3948391319 - 2⁴ = 3948391303 is a prime.

It is a super-2 number, since 2×3948391319² = 31179588015909119522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3948391019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1974195659 + 1974195660.

It is an arithmetic number, because the mean of its divisors is an integer number (1974195660).

Almost surely, 2^3948391319 is an apocalyptic number.

3948391319 is a deficient number, since it is larger than the sum of its proper divisors (1).

3948391319 is an equidigital number, since it uses as much as digits as its factorization.

3948391319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 629856, while the sum is 50.

The square root of 3948391319 is about 62836.2261677132. The cubic root of 3948391319 is about 1580.5445058874.

The spelling of 3948391319 in words is "three billion, nine hundred forty-eight million, three hundred ninety-one thousand, three hundred nineteen".